/*
 * Copyright (C) 2018 Zhejiang xiaominfo Technology CO.,LTD.
 * All rights reserved.
 * Official Web Site: http://www.xiaominfo.com.
 * Developer Web Site: http://open.xiaominfo.com.
 */

package com.xiaominfo.swagger.service.doc.config;

import com.xiaominfo.swagger.service.doc.propbean.SwaggerResourceItemProp;
import com.xiaominfo.swagger.service.doc.propbean.SwaggerResourcePropertyBean;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.gateway.config.GatewayProperties;
import org.springframework.cloud.gateway.route.RouteLocator;
import org.springframework.cloud.gateway.support.NameUtils;
import org.springframework.context.annotation.Primary;
import org.springframework.stereotype.Component;
import springfox.documentation.swagger.web.SwaggerResource;
import springfox.documentation.swagger.web.SwaggerResourcesProvider;

import java.util.ArrayList;
import java.util.List;
import java.util.Optional;

/***
 *
 * @since:swagger-bootstrap-ui 1.0
 * @author fsl
 * 2019/05/04 12:38
 */
@Slf4j
@Component
@Primary
@AllArgsConstructor
public class SwaggerResourceConfig implements SwaggerResourcesProvider {



    public static final String API_URI = "/v3/api-docs";

    private final RouteLocator routeLocator;

    private final GatewayProperties gatewayProperties;

    private SwaggerResourcePropertyBean swaggerResourcePropertyBean;

//    @Override
//    public List<SwaggerResource> get() {
//
//        List<SwaggerResource> resources = new ArrayList<>();
//        List<String> routes = new ArrayList<>();
//        //取出gateway的route
//        routeLocator.getRoutes().subscribe(route -> routes.add(route.getId()));
//        //结合配置的route-路径(Path)，和route过滤，只获取有效的route节点
//        gatewayProperties.getRoutes().stream().filter(routeDefinition -> routes.contains(routeDefinition.getId()))
//                .forEach(routeDefinition -> routeDefinition.getPredicates().stream()
//                        .filter(predicateDefinition -> ("Path").equalsIgnoreCase(predicateDefinition.getName()))
//                        .forEach(
//                                predicateDefinition -> {
//                                    List<SwaggerResourceItemProp> items = swaggerResourcePropertyBean.getItems();
//                                    System.out.println(items);
//                                    Optional<SwaggerResourceItemProp> resourceItem = swaggerResourcePropertyBean.getItems().stream().filter(item -> item.getId().equals(routeDefinition.getId()))
//                                            .findFirst();
//                                    if (resourceItem.isPresent()) {
//                                        resourceItem.get().getGroupNames().forEach(groupName->{
//                                            resources.add(swaggerResource(resourceItem.get().getSystemName()+"-"+groupName,"/" + routeDefinition.getId() + API_URI,groupName));
//                                        });
//                                    }
////                                    resources.add(swaggerResource(routeDefinition.getId(),
////                                            "/" + routeDefinition.getId() + API_URI));
//                                }
//                        ));
//        return resources;
//    }

    @Override
    public List<SwaggerResource> get() {
        List<SwaggerResource> resources = new ArrayList<>();
        List<String> routes = new ArrayList<>();
        routeLocator.getRoutes().subscribe(route -> routes.add(route.getId()));
        gatewayProperties.getRoutes().stream().filter(routeDefinition -> routes.contains(routeDefinition.getId())).forEach(route -> {
            route.getPredicates().stream()
                    .filter(predicateDefinition -> ("Path").equalsIgnoreCase(predicateDefinition.getName()))
                    .forEach(predicateDefinition -> resources.add(swaggerResource(route.getId(),
                            predicateDefinition.getArgs().get(NameUtils.GENERATED_NAME_PREFIX + "0")
                                    .replace("**", "v3/api-docs"))));
        });

        return resources;
    }

    private SwaggerResource swaggerResource(String name, String location) {
        SwaggerResource swaggerResource = new SwaggerResource();
        swaggerResource.setName(name);
        swaggerResource.setLocation(location);
        swaggerResource.setSwaggerVersion("3.0.3");
        return swaggerResource;
    }

    private SwaggerResource swaggerResource(String name, String location, String groupName) {
        SwaggerResource swaggerResource = new SwaggerResource();
        swaggerResource.setName(name);
        if (location.indexOf("?") > 0) {
            location += "&group=" + groupName;
        } else {
            location += "?group=" + groupName;
        }
        swaggerResource.setLocation(location);
        swaggerResource.setSwaggerVersion("3.0.3");
        return swaggerResource;
    }

}
